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Math Olympiad Grade 3 Probability Worksheet-1

Probability Worksheet-1

 

  1. If one letter is chosen randomly from the word "BANANA", what is the probability that the letter chosen is the letter "N"?

       A. 1 out of 6       B. 2 out of 6      C. 3 out of 6      D. 3 out of 4

 

  1. What are the chances of landing on green as compare to landing on blue when the spinner in the picture is spun once?

       A. certain                                      B. likely   

       C. equally likely                            D. unlikely

See more math practice tests on Rounding

  1. A box contains 9 red marbles, 12 blue marbles, 13 green marbles, and 6 white marbles. What is the probability of taking out a red marble?

       A. 9 out of 31                                B. 12 out of 41

       C. 13 out of 40                              D. 9 out of 40

 

  1. What is the probability of picking a number that is less than 20, out of the following number list?

       56, 34, 25, 21, 9, 18, 66, 39

       A. 1 out of 8       B. 2 out of 8      C. 3 out of 9      D. 4 out of 8

 

  1. What is the probability of spinning letter "A" in the spinning wheel shown below?

       A. 2 out of 8      B. 2 out of 6      C. 4 out of 7       D. 4 out of 6

 

  1. There are 3 red pens, 4 blue pens, 6 black pens, and 2 green pens on the table. What is the probability of choosing a purple pen from the table?

       A. 4 out of 15     B. 2 out of 15     C. 6 out of 15     D. Impossible

 

  1. If one letter is chosen randomly from the word "MATHEMATICS", what is the probability that the letter chosen is the letter "M"?

       A. 2 out of 11     B. 3 out of 11     C. 5 out of 11     D. 1 out of 11

 

  1. What are the chances of landing on yellow when the spinner in the picture is spun once?

       A. 0 out of 4      B. 2 out of 4      C. 4 out of 4      D. 1 out of 4

 

  1. What is the probability of picking a blue ball from a box that has 10 yellow balls, 8 red balls and 9 blue balls?

       A. 8 out of 27                                 B. 10 out of 27

       C. 9 out of 27                                 D. 9 out of 18

 

  1. A box has 10 blocks that are yellow and red. You are equally likely to pick a yellow block or a red block from the box. How many of each color blocks are in the box?

       A. 15                    B. 5                      C. 8                     D. 12

Answers

(1)–B; (2)–C; (3)–D; (4)–B; (5)–D; (6)–D; (7)–A; (8)–D; (9)–C; (10)–B